REF601 Multiple protection functions Programmable logic features

The relay provides an optimized composition of protection, monitoring and control functionality in one unit, with the best performance and usability in its class. Besides the conventional current transformer interface based variant, the relay also supports a variant based on Rogowski current sensors’ analog interface. This helps to obtain a compact medium voltage switchgear equipment size reduc­tion with improved performance and standardization.
Multifunctional protection: ABB REF601 relays can perform a variety of protection functions, including over current protection, over load protection, short circuit protection, ground protection, current differential protection and more.
Digital control: The relay uses digital technology with high precision and programmability, and can be customized to meet the needs of a specific application.
Communication interface: REF601 relays are typically equipped with a communication interface to communicate with other control systems, SCADA systems, or remote monitoring systems for remote monitoring and operation.
Event logging: It usually has an event logging function, which can record and store the event and fault information that occurs in the power system for subsequent analysis and troubleshooting.
Programmable logic: REF601 relays typically feature programmable logic to perform specific custom control operations as needed.
Human machine interface: In general, it will provide a user-friendly human machine interface for operators to configure, monitor and maintain.Overcurrent, earth-fault, phase-discontinuity, negative-phase sequence and thermal-overload protections, inrush current detection, circuit-breaker control, reclosing and measurement
Preconfigured functionality facilitates easy and fast commissioning
Universal power supply 24-265 V AC/DC
Configurable binary inputs/outputs using local HMI or communication interface
Specific variant with site selectable CT selection (1 or 5A), Boolean logic and timers
Site selectable Modbus and IEC 60870-5-103 protocols